JPS61145998A - Remote control transmitter - Google Patents

Abstract

PURPOSE:To obtain a device corresponding to various cases of a signal form, a modulation system or a carrier frequency of plural second command signals by extracting a command data corresponding to plural second command signals transmitting third command signal with a corresponded signal form, a modulation system or a carrier frequency. CONSTITUTION:A first command signal transmitted from a transmitter 11 and a second signal transmitted from a remote control transmitters 5-8 are received at a light receiving part 41. It is assumed that the frequencies of the second command signal transmitted from the remote control transmitter 5-8 are set up at the fixed second - fifth frequencies. A detecting circuits 42a-43e extracts a data signal from an output signal produced by the light receiving part 41 after eliminating any one of carrier components from the first - fifth frequencies. A modulation circuits 47a-47d works with a switching circuit 49 selectively and it modulates a carrier signal corresponding to an output data signal from a data generating circuit 46. A signal from the modulation circuits 47a-47d is outputted as a third command signal.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a remote control (hereinafter referred to as a remote control) transmitting device for wirelessly remotely controlling electrical equipment such as a television receiver.

BACKGROUND ART A remote control transmitter usually has a plurality of command keys for instructing the operation of electrical equipment, and in response to the operation of a command key, sends a command signal containing operation command data corresponding to the command key using infrared rays or the like. There is a remote control transmitter that sends out.

As shown in Figure 1, a VDP (video disc player) is an electrical device that is remotely controlled by a remote control transmitter.
If a combination of DADP (digital audio disc player) 2, TV (television receiver) 3, and VTR (video recorder) 4 is present, a dedicated remote control transmitter 5 to 4 is provided for each of these electric devices l to 4. 8 is provided. However, the remote control transmitters 1 to 4 must be replaced and operated for each electrical device 1 to 4, resulting in poor operability.

Therefore, a transmitter that selectively obtains any one of a plurality of address data according to an operation and sends out a first command signal including the address data, and a remote control transmitter 5 to 8 etc. are sent out. A second command signal containing command data is received and the command data is stored in an arbitrary storage area, and when a first command signal is received, address data is extracted from the first command signal and a memory specified by the address data is stored. The specified data is read from the area and the third command signal containing the read command data is sent to the second
The applicant has proposed a remote control transmitting device comprising a transmitter/receiver that transmits a command signal to electrical equipment 1 to 4, etc.

With this remote control transmitter, a single transmitter can remotely control multiple electrical devices, improving operability.

By the way, in such a remote control transmitter, the signal format, modulation method, or carrier frequency of the second command signals sent by the remote control transmitters 5 to 8 are not necessarily all the same, so the signal format of the second command signal,
It is desirable to be able to handle cases where the modulation method or carrier frequency is different.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a method for controlling electrical equipment when the signal format, modulation method, or carrier frequency of the second command signal sent out by a plurality of remote control transmitters provided in advance for direct remote control of electrical equipment is different. It is an object of the present invention to provide a compatible remote control transmitting device.

The remote control transmitting device of the present invention extracts command data corresponding to a plurality of second command signals that differ in at least one of a signal format, a modulation method, or a carrier frequency,
It is characterized in that it sends out a third command signal having a signal format, modulation method, and carrier frequency corresponding to the command data output from the storage means.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to FIGS. 2 to 6.

A remote control transmitter according to an embodiment of the present invention shown in FIG. 2 includes a transmitter 11 and a transceiver 12.

The transmitter 11 is provided with an oscillation circuit 21 that generates an oscillation signal of a reference frequency as shown in FIG.
3 is connected. The timing signal output from the timing signal generation circuit 23 is supplied to the switch output circuit 24, the switch input circuit 25, and the control circuit 26Fc. A switch matrix 20 is formed between the switch output circuit 25 and the switch input circuit 25. The operators of each switch forming the switch matrix 20 are rMEMOJ as shown in FIG.
A key, rAJ or rRJ, is provided on the operation surface of the case 40. A control circuit 26 is connected to the output end of the switch input circuit 24 via a data resistor 27, and a modulation circuit is connected to the control circuit 26. The modulation circuit is configured to modulate and output the divided signal of the first predetermined frequency supplied from the divider 22 as a carrier signal according to the output data of the control circuit 26.The output terminal of the modulation circuit A light emitting section 29 that sends out an infrared first command signal is connected to, and the light emitting section 29 includes an infrared light emitting diode 30, a driving transistor 31, and a resistor 32.

Note that the oscillation circuit 21, the frequency divider 22, the timing signal generation circuit n, the switch output circuit 24, and the switch input circuit 25
, the control circuit 26, the data register 27, and the modulation circuit 28 are integrally formed by a one-chig command signal generation IC 33, and the oscillation element and capacitors 35 and 36 are provided externally to the oscillation circuit 21 as components. There is. The switch matrix 20 also includes diodes 37 to 39 to obtain a predetermined custom code.
is provided.

In the transmitter 11 having such a configuration, the switch output circuit 24 outputs the output terminal O! according to the timing signal output from the timing signal generation circuit O! A first scan signal is generated that sequentially sets signals 0 to 08 to a high level at predetermined intervals, and each column of the switch matrix 20 sequentially becomes a high level.

An 8-bit custom code is formed by the diodes 37 to 39 each time the first scan signal is generated and is serially supplied to the switch input circuit 25. When a switch in the switch matrix 20 is turned on by a key operation, when the column in which the switch is located becomes high level by the first scan signal, the switch input circuit 250 input terminals 1 to 1 correspond to the row in which the switch is located. A high level signal is supplied to one terminal of the 8x8 bit switch signal.

The switch signal supplied to the switch input circuit 25 and the signal data including the custom code are held in the data register 27. In response to this held data, the control circuit 26 obtains an 8-bit data code corresponding to the operated key, and further creates an output data signal by subjecting it to predetermined signal format processing based on the custom code and data code.

The output data signal is supplied to modulation circuit 28 in response to a timing signal. Frequency divider 22 according to the output data signal
A carrier signal of a first predetermined frequency outputted from the first predetermined frequency is modulated and supplied to the transistor 31 . transistor 31
The modulation circuit turns on and off in accordance with the output signal to cause the light emitting diode 30 to blink, and this blinking becomes the first command signal and is output.

On the other hand, in the transceiver 12, as shown in FIG. 5, the first command signal sent from the transmitter 11 and the second command signal sent from the remote control transmitters 5 to 8, etc. are received by the light receiving section 41 to generate electricity. It is designed to be output as a signal. Here, the carrier frequency of the second command signal sent from the remote control transmitter 5 becomes the second predetermined frequency, the carrier frequency of the second command signal sent from the remote control transmitter 6 becomes the third predetermined frequency, and the remote control transmitter It is assumed that the carrier frequency of the second command signal sent from the remote control transmitter 7 is set to a fourth predetermined frequency, and the carrier frequency of the second command signal sent from the remote control transmitter 8 is set to a fifth predetermined frequency. Five detection circuits 42α to 42-g are connected to the light receiving section 41. The detection circuits 42α to 42e remove carrier components of any one of the first to fifth predetermined frequencies from the output signal of the light receiving section 41 to extract a data signal. A discrimination circuit 44 is connected to the output ends of the detection circuits 42α to 42s via a decoder circuit 43. The determination circuit 44 determines address data, command data, and mode switching command from the output signal of the decoder circuit 43. The memory circuit 45 is a writable/readable memory and has storage areas A to A corresponding to the rAJ to rRJ keys of the transmitter 11. Writing/reading of the memory circuit 45 is performed by the discrimination circuit 44
controlled by A data generation circuit 46 is connected to the output terminal of the memory circuit 45, and the data generation circuit 46 generates an output data signal according to the data read from the memory circuit 45. Four modulation circuits 47G to 47d are connected to the output end of the data generation circuit 46. Carrier signals are supplied to the modulation circuits 47α to 47d from oscillators (not shown), and the frequencies of the respective carrier signals are set to second to fifth predetermined frequencies. Modulation circuit 4
7α to 47d are selectively activated by the switching circuit 49, and modulate the carrier signal according to the output data signal of the data generation circuit 46 when activated. The output signals of the modulation circuits 47a to 47d are output by the light emitting section 48 as a third infrared command signal.

The light emitting section 48 is configured similarly to the light emitting section 29. Note that the command data includes carrier frequency information.
The switching circuit 49 switches the modulation circuit 47ff according to the contents of the command data output from the storage circuit 45 to the data generation circuit 46.
, to 474.

Next, the operation of the transceiver 12 having such a configuration will be explained according to the operating procedure.

Now, in order to remotely control the VDPI using the remote control transmitter according to the present invention, first, the light emitting section 29 of the transmitter 11 must be
rM of the transmitter 11 toward the light receiving section 41 of the transmitter/receiver 12
Operate the EMOJ key. [By operating the MBMOJ key, the above-described operation of the transmitter 11 causes the light emitting section 29 to send out a first command signal containing a mode switching command, and is supplied to the light receiving section 41 of the transceiver 12. This first command signal is converted into an electric signal in the light receiving section 41 and then sent to the detection circuit 4.
2α to 42g, the carrier component of the first predetermined frequency is removed by the detection circuit 42a, and the data signal is extracted. Since the detection circuits 42b to 42g do not extract data signals from signals containing carrier components of the first predetermined frequency, the detection circuits 42b to 4
No output is obtained from 2e. On the other hand, the extracted data signal is code-converted by the decoder circuit 43 and the data code is supplied to the determination circuit 44. A determining circuit 44 determines whether the data code is address data, command data, or mode switching command. This determination is made, for example, by assigning two predetermined bits of the data code to bits representing whether the data is address data, command data, or mode switching command, and determining from the contents of these two predetermined bits. Therefore, at this time, the command is determined to be a mode switching command, that is, a memory storage command, and the transceiver 12 enters the memory enabled state. Komude, r of transmitter 11
When the AJ key is operated, a first command signal containing address data specifying the storage area A of the storage circuit 45 is sent out from the light emitting section 29. This first command signal is rME
Similar to the first command signal sent out by the MOJ key operation, the decoder circuit 43 converts the signal into a data code and supplies it to the discrimination circuit 44. The determination circuit 44 determines that the content of this data code is address data, and supplies an address signal specifying the storage area A to the storage circuit 45 in accordance with the data code.

Next, the VDPI-dedicated remote control transmitter 5 shown in FIG.
For example, point the light emitting part of the r
When the PLAYJ key is operated, a second command signal containing command data representing a playback operation is sent from the remote control transmitter 5 and supplied to the light receiving section 41 .

This second command signal is converted into an electric signal in the light receiving section 41 and supplied to the detection circuits 42cL to 42g,
The carrier component of the second predetermined frequency is removed by the detection circuit 42b and the data signal is extracted. Detection circuit 42
Since α, 42G to 42e do not extract data signals for signals containing carrier components of the second predetermined frequency,
At this time, no output is obtained from the detection circuits 42α, 42G or 42g. The extracted data signal is code-converted by the decoder circuit 43 as in the case of the first command signal, and the data code is supplied to the determination circuit 44. The determination circuit 44 determines that the content of this data code is command data, supplies the command data to the storage circuit 45, and also supplies a write signal to the storage circuit 45 to cause the command data to be stored in the storage area A.

Next, when you operate the rDJ key on the transmitter 11, rAJ
As in the case of key operation, a first command signal including an address booter specifying the storage area D of the storage circuit 45 is sent from the light emitting section 29. When this first command signal is supplied to the light receiving section 41, an address signal specifying the storage area D is supplied from the determination circuit 44 to the storage circuit 45 via the detection circuit 42cL% decoder circuit 43 and the determination circuit 44. Then, when you operate any command key on the remote control transmitter 6 dedicated to DADP2, the remote control transmitter 6
A second command signal is supplied to the light receiving section 41 from. This second command signal is converted into an electrical signal in the light receiving section 41 and then supplied to the decoder circuit 43 via the detection circuit 42G. Then, the content of the data code output from the decoder circuit 43 is determined to be command data, and the command data is written into the storage area D of the storage circuit 45.

Further, the second command signal sent from the remote control transmitters 7 and 8 can be received and the command data included in the second command signal can be stored in any storage area of the storage circuit 45 in the same manner as described above. At this time, the detection circuit 42 receives the second command signal sent from the remote control transmitter 7.
d extracts the data signal, and the detection circuit 426 extracts the data signal in response to the second command signal sent from the remote control transmitter 8.

When the command data is thus stored in each storage area of the storage circuit 45, the rMEMOJ key of the transmitter 11 is operated again to release the memory enabled state.

As a result, when the first command signal including the mode switching command is sent from the light emitting unit 29 and supplied to the transceiver 12,
The determination circuit material determines that it is a mode switching command, and the memory enabled state is released.

In such a released state, the light emitting part of the transceiver 12 is set to V.
"A" of the transmitter 11 toward the light receiving section of the DP i and the light emitting section 29 of the transmitter 11 toward the light receiving section 41 of the transceiver 12.
When the key is operated, a first command signal containing address data specifying the storage area A of the storage circuit 45 is sent to the light emitting unit 2.
9 to the light receiving section 41. This first command signal is converted into an electric signal in the light receiving section 41 in the same way as in the memory enabled state, and then supplied to the decoder circuit 43 via the detection circuit 42 (Z), and is converted into a data code and sent to the discrimination circuit 44.
supplied to The determination circuit 44 determines that the content of this data code is address data, and sends an address signal specifying the storage area A to the storage circuit 45 according to the data code.
At the same time, a read signal is supplied to the memory circuit 45.

VDP stored in storage area A according to the read signal
Command data representing the playback operation of 1 is read out.

The read command data is sent to the data generation circuit 46.
supplied to The data code forming the command data is subjected to predetermined signal format processing together with a predetermined custom code in a data generation circuit 46 to become an output data signal. On the other hand, since the switching circuit 49 selectively operates the modulation circuit 47α according to the content of the read command data, the modulation circuit 47α modulates the carrier signal of the second predetermined frequency according to the output data signal, and the modulated signal is the light emitting part 4
8, it is output as the third frame/do signal. This third command signal is the same as the second command signal obtained by operating the PLAYJ key on the remote control transmitter 5,
When the VDPI receives this third command signal, the reproduction operation is started. Furthermore, even if any of the rBJ or rRJ keys other than the rAJ key is operated, a third command signal containing command data read out from the storage area of the memory circuit 45 corresponding to the operated key is generated in the same manner as described above. Sent from the light emitting part. At that time, the modulation circuit 4 is controlled by the switching circuit 49 according to the content of the read command data.
Any one of 7α to 47d is selectively activated, and a third command signal having the same carrier frequency as the carrier frequency of the second command signal determined in each of the electrical devices 1 to 4 is sent out.

In the remote control transmitting device according to the present invention, when it is in the memorizable state, it may be indicated by a display such as a rung.

Furthermore, after storing the command data in the storage circuit 45, “A
'', rR, and J keys may be provided with a display that indicates what kind of command they are used to issue. This display is not limited to an LCD, FL, LED, etc., but may also be a sticker with the contents of the command written on it.

In the embodiment of the present invention described above, the data storage command is generated by operating the INEMOJ key of the transmitter 11, but the transmitter/receiver 12 K rM
An EMOJ key may be provided to generate a data storage command in the transmitter/receiver (2). Further, when the transceiver 12 enters the memorizable state in response to a data storage command, the command key of the remote control transmitter 5 etc. is operated first to give the command data to the discrimination circuit 44, and then the rA of the transmitter 11 is
Address data may be given by operating any one of the J to I"R1 keys.

Furthermore, in the embodiment of the present invention described above, the carrier frequency of the second command signal differs depending on the remote control transmitter, but if the modulation method of the second command signal differs, the detection circuit of the transceiver 12 If the signal format of the second command signal is different, a plurality of decoder circuits and data generation circuits of the transceiver 12 are provided and the conversion method is set to an appropriate one. This is possible by setting each.

Furthermore, in the embodiment of the present invention described above, the memory circuit 45
There is no particular limitation on the method of writing command data to the memory circuit 45, and there are no particular limitations on the method of writing command data to the memory circuit 45. It may be any other method.

In addition, an rAJ or "几" key is provided in the transceiver 12 so that address data is selected in the transceiver 12, so that when a data storage command exists, the rAJ or "几" key of the transceiver 12 is set.
It is also possible to store command data in any storage area of the storage circuit 45 by operating the J to rRJ keys.

Furthermore, it is clear that the electrical equipment to be remotely controlled is not limited to audio equipment or video equipment, but may be any electrical equipment that can be remotely controlled by electromagnetic waves, ultrasonic waves, or the like.

Effects of the Invention As described above, according to the remote control transmitting device of the present invention, the signal format and modulation of the second command signal sent by the remote control transmitter provided in advance for each electrical device in order to directly remotely control the electrical device can be improved. Even if the systems or carrier frequencies are different, a single transmitter can remotely control multiple electrical devices.

[Brief explanation of the drawing]

tA t Fig. 2 shows a conventional remote control system, Fig. 2 shows a remote control system using a remote control transmitter according to the present invention, and Fig. 3 shows the configuration of the transmitter of the device shown in Fig. 2. FIG. 4 is a plan view showing the external appearance of the transmitter, FIG. 5 is a block diagram showing the configuration of the transmitter/receiver of the device shown in FIG. FIG. Explanation of symbols of main parts 5 to 8, 11... Transmitter 12... Transmitting/receiving equipment/
...Switch matrix path, L47d without 47α...Modulation circuit 29.48.
... Light emitting part 41 ... Light receiving part 42α L42
g...Detection circuit■...Discrimination circuit

Claims (1)

[Claims] a wireless transmitter that selectively obtains any one of a plurality of address data in response to an operation and transmits a first command signal including the address data; A second section containing command data sent by a transmitter installed in advance to extract address data and directly remotely control electrical equipment wirelessly.
receiving means for extracting command data from the second command signal when receiving a command signal; and receiving means for extracting command data from the second command signal when a data storage command is present; storage means for storing command data stored in a storage area specified by the address data in response to supply of address data from the receiving means when the data storage command does not exist; transmitting means that is supplied with the output command data and transmits a third command signal containing the command data as the second command signal, and the receiving means differs in at least one of a signal format, a modulation method, or a carrier frequency. extracting command data corresponding to the plurality of second command signals;
A remote control transmitting device, wherein the transmitting means transmits the third command signal having a signal format, modulation method, and carrier frequency corresponding to the command data output from the storage means.